为什么这个XAML重写模板不起作用

关于为什么我的wpfxaml代码不起作用的任何想法。我正在尝试覆盖WPFToolkit图表显示,并采用了它们的默认XAML并包含在我的网格资源节作为覆盖的一种方式。具体来说,我想删除图形标记,但这个具体问题涉及到澄清我对XAML的理解,询问为什么这些具体方法不起作用:

-我试着把可见性隐藏在网格元素中,但这似乎不起作用?为什么会这样?

(二) 尝试删除标签中的所有行,但这不起作用。为什么会这样?这不应该压倒一切。我想知道我的整个覆盖模板是否真的适用于LineDataPoint?(我注意到我在下面的代码中使用的LineSeries覆盖仍然有效)

        <!--  charting:LineSeries  -->
        <Style TargetType="chartingToolkit:LineSeries">
            <Setter Property="IsTabStop" Value="False" />
            <Setter Property="PolylineStyle">
                <Setter.Value>
                    <Style TargetType="Polyline">
                        <Setter Property="StrokeThickness" Value="1" />
                    </Style>
                </Setter.Value>
            </Setter>
        </Style>

        <!--  charting:LineDataPoint  -->
        <Style TargetType="chartingToolkit:LineDataPoint">
            <Setter Property="Background" Value="Orange" />
            <Setter Property="BorderBrush" Value="Red" />
            <Setter Property="BorderThickness" Value="1" />
            <Setter Property="IsTabStop" Value="False" />
            <Setter Property="Width" Value="2" />
            <Setter Property="Height" Value="2" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="chartingToolkit:LineDataPoint">
                        <Grid x:Name="Root" Opacity="0" Visibility="Hidden">
                            <Ellipse Stroke="{TemplateBinding BorderBrush}" Fill="{TemplateBinding Background}" Height="30"/>
                            <Ellipse RenderTransformOrigin="0.661,0.321">
                                <Ellipse.Fill>
                                    <RadialGradientBrush GradientOrigin="0.681,0.308">
                                        <GradientStop Color="Green" />
                                        <GradientStop Color="#FFFFFFFF" Offset="1" />
                                    </RadialGradientBrush>
                                </Ellipse.Fill>
                            </Ellipse>
                            <Ellipse x:Name="SelectionHighlight" Opacity="0" Fill="Red" />
                            <Ellipse x:Name="MouseOverHighlight" Opacity="0" Fill="White" />
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

    </Grid.Resources>

    <chartingToolkit:Chart Title="Engine Performance">
        <!-- Power curve -->
        <chartingToolkit:LineSeries
                        Title="Power"
                        ItemsSource="{StaticResource EngineMeasurementCollection}"
                        IndependentValueBinding="{Binding Speed}"
                        DependentValueBinding="{Binding Power}">
            <!-- Vertical axis for power curve -->
            <chartingToolkit:LineSeries.DependentRangeAxis>
                <chartingToolkit:LinearAxis
                                Orientation="Y"
                                Title="Power (hp)"
                                Minimum="0"
                                Maximum="250"
                                Interval="50"
                                ShowGridLines="True"/>
            </chartingToolkit:LineSeries.DependentRangeAxis>
        </chartingToolkit:LineSeries>
        <!-- Torque curve -->
        <chartingToolkit:LineSeries
                        Title="Torque"
                        ItemsSource="{StaticResource EngineMeasurementCollection}"
                        IndependentValueBinding="{Binding Speed}"
                        DependentValueBinding="{Binding Torque}">
            <!-- Vertical axis for torque curve -->
            <chartingToolkit:LineSeries.DependentRangeAxis>
                <chartingToolkit:LinearAxis
                                Orientation="Y"
                                Title="Torque (lb-ft)"
                                Minimum="50"
                                Maximum="300"
                                Interval="50"/>
            </chartingToolkit:LineSeries.DependentRangeAxis>
        </chartingToolkit:LineSeries>
        <chartingToolkit:Chart.Axes>
            <!-- Shared horizontal axis -->
            <chartingToolkit:LinearAxis
                            Orientation="X"
                            Title="Speed (rpm)"
                            Interval="1000"
                            ShowGridLines="True"/>
        </chartingToolkit:Chart.Axes>
    </chartingToolkit:Chart>
</Grid>

编辑:

<Window x:Class="MyInternetUsage.EnginePerformance"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:chartingToolkit="clr-namespace:System.Windows.Controls.DataVisualization.Charting;assembly=System.Windows.Controls.DataVisualization.Toolkit" xmlns:local="clr-namespace:DataVisualizationDemos" xmlns:datavis="clr-namespace:System.Windows.Controls.DataVisualization;assembly=System.Windows.Controls.DataVisualization.Toolkit" Title="EnginePerformance" Height="277" Width="371">
    <Grid>
        <Grid.Resources>
            <local:EngineMeasurementCollection x:Key="EngineMeasurementCollection"/>

            <!--  charting:LineDataPoint  -->
            <Style TargetType="chartingToolkit:LineDataPoint">
                <Setter Property="Background" Value="Orange" />
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="chartingToolkit:LineDataPoint">

                            <Grid
                                Width="30"
                                Height="30"
                                Background="{TemplateBinding Background}"/>

                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
            </Style>
        </Grid.Resources>

        <chartingToolkit:Chart Title="Engine Performance">
            <!-- Power curve -->
            <chartingToolkit:LineSeries
                            Title="Power"
                            ItemsSource="{StaticResource EngineMeasurementCollection}"
                            IndependentValueBinding="{Binding Speed}"
                            DependentValueBinding="{Binding Power}">

            </chartingToolkit:LineSeries>

        </chartingToolkit:Chart>
    </Grid>
</Window>